president obama sees no need for more increases in tax rates. he said that in an interview with cbs news that was broadcast live before the super bowl. mr. obama signed a bill raising rates on higher-income americans last month but this is the first time that he's said that he doesn't intend to extend higher rates to more taxpayers. it's a change from the position that he's held for many months. >> we can't get this done unless we also add ask the wealthiest households to pay higher taxes on their incomes above $250,000. >> pelley: that was mr. obama before the election and he made the same points in another way eight weeks ago. >> just to be clear: i'm not going to sign any package that somehow prevents the top rate from going up for folks at the top 2%. >> pelley: but last month he signed a stopgap compromise with congress that raised taxes on families making more than $450,000 a year. as the budget negotiations continue now, we wondered whether he would return to his goal of extending higher rates to families at that $250,000 level. are you t